Senior Fuel Cycle and Blanket Mechanical Engineer
Commonwealth Fusion SystemsDevens, MA
Full Time
Posted September 22, 2026
$110k - $185k
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Job Description
About Commonwealth Fusion Systems:
Key Responsibilities
- Lead and contribute to the design of fluid process systems for testing at varying scales
- Develop specifications and designs of high-temperature molten salt process equipment, including vessels, tanks, valves, pumps and piping systems
- Be the technical lead interfacing with suppliers and construction teams to procure, install and commission process equipment
- At later project stages, support fixed equipment mechanical reliability
- Support pipe stress evaluations working with piping stress engineers
- Collaborate across CFS teams to incorporate R&D learnings and interfacing system requirements into component designs and specifications
- Actively engage with suppliers, contactors and CFS teams to put safety first at all project stages
- Track projects and tasks against milestones and report progress up and across the organization
Requirements
- Ability to occasionally lift up to 50 lbs
- Perform activities such as typing, standing or sitting for extended periods of time
- Willing to occasionally travel to suppliers and support commissioning/test activities
- Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
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